Buy #57 Stone in Imperial, PA

Pennsylvania Rock Supply handles gravel and aggregate delivery in Imperial, PA, from 2A modified base stone to decorative rock. We stock the materials Allegheny County crews ask for by name. Order online, pick your quantity, and a dump truck brings it to your site.

Most work here starts with a base. Clay-rich ground on these hillsides holds water, so what you put under a drive matters as much as what you see on top.

Materials for Imperial Projects

Driveway and base work leads everything we sell here. Most jobs start with 2A Modified, the crushed stone with the fines left in. It compacts hard and holds a grade, which is why it is the standard Pennsylvania base. Top it with Driveway Gravel if you want a fresh running surface on a drive that already has a solid base.

Wet spots need a different approach. Clean stone lets water pass through instead of trapping it. 2B Stone is the washed 3/4 inch stone yards here call 2B, and it is what goes in French drains, behind retaining walls, and under shed pads on soggy ground.

For bedding and joints, Screenings pack firm under pavers and flagstone. Washed Sand beds slabs and fills paver joints. Top Soil finishes lawns after the base is set.

Ground and Conditions in Imperial

Start with where the water goes. Heavy rain and snowmelt run down these steep hillsides, and water soaking into clay layers on a slope is the main trigger for ground movement around Pittsburgh. On a hillside lot, roof and drive runoff needs a destination. A clean stone drainage layer, 2B or #57, keeps that water moving instead of pooling against a wall or under a base.

The ground itself is flat-lying shale, siltstone, sandstone and clay weathered into silty, clay-rich soils. Many communities here sit over old underground coal mines. Clay that stays wet softens and heaves, so a thin base or one with no drainage breaks up fast.

Freeze-thaw cycles run every winter, and frost depth is commonly about 36 inches, set by each municipality. Base, driveway and paver work runs from spring, once the ground has thawed and dried, into late fall. Long wet spells and rain on snow are when hillside ground is most likely to move.

Delivery to Imperial and the Surrounding Area

Bulk material arrives by dump truck. You order online, choose a quantity by the ton or yard, and size the load with the calculator before checkout. Pick a delivery date, then get the site ready.

Have a clear, firm spot for the truck to drop. A driveway or pad that can take the weight saves you moving material twice. If the drop is tight or the ground is soft, tell us at checkout so the driver knows what to expect.

We deliver across Imperial and Allegheny County, including Pittsburgh, Bethel Park, Monroeville, Allison Park and West Mifflin. Quantities for larger projects are ordered the same way.

Order Base Stone and Aggregates in Imperial

Driveway bases, drainage stone, paver bedding and topsoil all start with the right material under the surface. Pennsylvania Rock Supply delivers 2A modified, 2B, screenings, sand and soil to Imperial and the rest of Allegheny County. Size your load online and schedule the drop when you are ready.